Malicious PDF — malware analysis report

Static analysis result for SHA-256 8cb560c191590607…

MALICIOUS

PDF

79.9 KB Created: 2021-01-16 12:40:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: e52d52eeba3a9d26bdde912eef5871a2 SHA-1: ebda256bed04d96afedf329291ee969cca1d16b8 SHA-256: 8cb560c191590607d4a1bbbb991a29fe779376b642f294fc94d23283b1a497ee
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains an embedded URL that directs users to a website related to a 'Pathfinder heavy crossbow build'. This, combined with the ML classifier and ClamAV detection, strongly suggests a phishing or social engineering attack. The presence of PDF_URI and EMBEDDED_URL heuristics further supports this, indicating the document's intent is to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://traffine.ru/123?utm_term=pathfinder+heavy+crossbow+build PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4393022/normal_5fcc539fcc408.pdfIn PDF document text
    • https://site-1168324.mozfiles.com/files/1168324/58711382718.pdfIn PDF document text
    • https://site-1177219.mozfiles.com/files/1177219/regular_plural_nouns_worksheets.pdfIn PDF document text
    • https://cdn.sqhk.co/jedugifaxido/fbidEEx/best_frame_app_for_instagram.pdfIn PDF document text
    • https://site-1216697.mozfiles.com/files/1216697/android_sqlite_crud_listview.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401558/normal_5f9c8f018dfd6.pdfIn PDF document text
    • https://cdn.sqhk.co/letijefa/hevgiyy/bed_wars_mod_apk_happymod.pdfIn PDF document text
    • https://site-1174888.mozfiles.com/files/1174888/world_cup_2020_fortnite.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/kefiperizonofu/whatsapp_apk_for_windows.pdfIn PDF document text
    • https://s3.amazonaws.com/xufaxoferugod/bodoni_mt_free.pdfIn PDF document text
    • https://s3.amazonaws.com/nafibanefexex/mapa_mundi_con_nombres_para_imprimir.pdfIn PDF document text
    • https://s3.amazonaws.com/jonora/44922434144.pdfIn PDF document text
    • https://s3.amazonaws.com/lowebemuwojiso/litchfield_park_police_reports.pdfIn PDF document text
    • https://s3.amazonaws.com/feliso/chap_chap_charkha_chale_song.pdfIn PDF document text
    • https://s3.amazonaws.com/tadevewuju/marketing_plan_template_powerpoint.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fa66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA66 5504 bytes
SHA-256: 667f6e63977ddf6a1b9a0c5fde3d18912229f97e7e40a89d6ee2d85076606320
font_01_sfnt_off00010d34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D34 11248 bytes
SHA-256: aab38227b97ac048085c98c8ffebd57bbc3f3f85e1f38947f1987ec558cd73b0